Will give increased horsepower and torque. This kit is a TRUE BOLT ON, comes complete with A new Cylinder!
Keep all your orginal parts! Aluminum cylinder with a nickel carbide coating.Everything you need to bolt it on and go! No machining is required, simply bolt on and Blast!! We have a full line of BIG BORE KITS. The item "YAMAHA YZ450F 478CC 98MM JE BIG BORE CYLINDER KIT PISTON CYLINDER GASKET 2006-09" is in sale since Wednesday, March 7, 2018. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Other Engines & Engine Parts". The seller is "atvunlimited" and is located in Sunbury, Ohio. This item can be shipped worldwide.